Science
Mechanism of Action
It functions as a high-molecular-weight humectant that forms a physical 'second skin' lattice over the epidermis to trap moisture and block environmental irritants. At a cellular level, it upregulates Aquaporin-3 (AQP3) expression to improve water transport while suppressing pro-inflammatory Th2-type cytokines and IgE to mitigate allergic responses and redness.
Research
Clinical Evidence
High confidence0.05%
Key findings
- 01 Clinical evaluation at 0.05% concentration demonstrated a significant reduction in transepidermal water loss (TEWL) and clinical symptoms of atopic dermatitis over 4 weeks.
- 02 Comparative testing showed that 0.05% sacran outperformed hyaluronic acid in both moisture retention and the physical repair of corneocytes.
- 03 In vitro data at 0.01% confirmed the inhibition of pro-inflammatory cytokines TNF-α, IL-1β, and IL-6.
Transparency
Dusting Analysis
Because it is effective at extremely low concentrations and carries a premium price point, it is frequently 'label-dusted' at concentrations below 0.01%, which may be insufficient to form the required moisture-retaining film.
The Formula
Formulation
Stability
Highly stable in aqueous environments across varying temperatures; maintains high viscosity due to its massive molecular structure.
Synergies
- Glycerin
- Ceramides
- Panthenol
- Non-cationic Hyaluronic Acid
Conflicts
- Cationic surfactants (Cetrimonium Chloride)
- Cationic polymers (Polyquaternium-10)
- High concentrations of electrolytes/salts
Safety
Safety Profile
Considered exceptionally safe; even at concentrations up to 30% in specialized eye products, it remains non-irritating.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A superior, megamolecular alternative to hyaluronic acid that provides unmatched moisture retention and biological anti-inflammatory benefits for compromised skin barriers.
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References
Sources